Table of Contents
What do we use to compare the masses of atoms of different elements?
The relative atomic mass of an element is a weighted average of the masses of the atoms of the isotopes. It takes account of the abundance of each of the isotopes of the element. Relative atomic masses can be found in the periodic table. They have the symbol A r.
Do different atoms of elements have different weights?
Atoms of the same chemical element do not always have the same mass because, although the number of protons in the nucleus is the same for all atoms of the same element, the number of neutrons is not. Most elements as they occur naturally on earth are mixtures of several isotopes.
What characteristics of elements differs with different isotopes?
Isotopes. An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.
Do atoms of different elements have different numbers of protons?
The number of protons in an atom is called its atomic number (Z). This number is very important because it is unique for atoms of a given element. All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms.
Is atomic number same as atomic radius?
The atomic number is the amount of protons present in the atom. Because of that, we can say that the atomic number represents the positive charge of the atom. But, the Atomic radius becomes larger as you move down the periodic table in a group or column because it increases the number of energy levels.
Which is the best type of graph to use?
Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time. . . . a Bar Graph. Bar graphs are used to compare things between different groups or to track changes over time.
What are the weights of all the elements?
Standard Atomic Weights Z Symbol Element Standard Atomic Weight Notes 6 C carbon [12.0096, 12.0116] 7 N nitrogen [14.006 43, 14.007 28] m 8 O oxygen [15.999 03, 15.999 77] m 9 F fluorine 18.998 403 163 (6)
Which is better bar graph or pie chart?
Pie charts are best to use when you are trying to compare parts of a whole. They do not show changes over time. . . . a Bar Graph. Bar graphs are used to compare things between different groups or to track changes over time. However, when trying to measure change over time, bar graphs are best when the changes are larger.
Which is better a line graph or a table?
It is more difficult to examine overall trends and make comparisons with tables, than it is with graphs. Line graphs are used to display data or information that changes continuously over time. Line graphs allow us to see overall trends such as an increase or decrease in data over time.